From 95a5724b19c0c1281a7f72ad1812079a53a52dbc Mon Sep 17 00:00:00 2001
From: mattis fjallstrom <mattis@acm.org>
Date: Wed, 15 Oct 2014 03:40:52 +0200
Subject: Adding memtest and build-time flag for SPL serial boot

Change-Id: Iaf14e63498c3cdca4e2125b8217195b90caf842b
---
 arch/arm/cpu/armv7/omap3/board.c      | 11 +++++++++++
 arch/arm/include/asm/arch-omap3/spl.h |  1 +
 common/spl/spl.c                      | 13 ++++++++++++-
 config.mk                             |  3 +++
 include/configs/omap3_h1.h            | 11 +++++++++--
 spl/Makefile                          |  6 ++++++
 6 files changed, 42 insertions(+), 3 deletions(-)

diff --git a/arch/arm/cpu/armv7/omap3/board.c b/arch/arm/cpu/armv7/omap3/board.c
index 29228160c..2cd2df519 100644
--- a/arch/arm/cpu/armv7/omap3/board.c
+++ b/arch/arm/cpu/armv7/omap3/board.c
@@ -56,7 +56,18 @@ const struct gpio_bank *const omap_gpio_bank = gpio_bank_34xx;
 * We would not typically need to save these parameters in regular
 * U-Boot. This is needed only in SPL at the moment.
 */
+
+/* 
+ * We need two different builds, one for UART and one for NAND. 
+ * In the future, consider changing this to make NAND the default,
+ * and if it isn't there or isn't working, try UART.
+ */
+
+#ifdef SPL_BOOT_DEVICE_UART
+u32 omap3_boot_device = BOOT_DEVICE_UART;
+#else
 u32 omap3_boot_device = BOOT_DEVICE_NAND;
+#endif
 
 /* auto boot mode detection is not possible for OMAP3 - hard code */
 u32 spl_boot_mode(void)
diff --git a/arch/arm/include/asm/arch-omap3/spl.h b/arch/arm/include/asm/arch-omap3/spl.h
index 2ec319c08..e9c33d981 100644
--- a/arch/arm/include/asm/arch-omap3/spl.h
+++ b/arch/arm/include/asm/arch-omap3/spl.h
@@ -14,6 +14,7 @@
 #define BOOT_DEVICE_MMC2	5 /*emmc*/
 #define BOOT_DEVICE_MMC1	6
 #define BOOT_DEVICE_XIPWAIT	7
+#define BOOT_DEVICE_UART    8
 #define BOOT_DEVICE_MMC2_2      0xFF
 
 #define MMC_BOOT_DEVICES_START	BOOT_DEVICE_MMC2
diff --git a/common/spl/spl.c b/common/spl/spl.c
index 2c7ca16dc..c294b1ef4 100644
--- a/common/spl/spl.c
+++ b/common/spl/spl.c
@@ -129,6 +129,7 @@ static void spl_ram_load_image(void)
 }
 #endif
 
+
 void board_init_r(gd_t *dummy1, ulong dummy2)
 {
 	u32 boot_device;
@@ -151,7 +152,17 @@ void board_init_r(gd_t *dummy1, ulong dummy2)
 	spl_board_init();
 #endif
 
+    /* If we want to boot from UART, for OMAP3630, we hardcode boot_device 
+     * to BOOT_DEVICE_UART. Same thing in 
+     * arch/arm/cpu/armv7/omap3/board.c. --mfj
+     */
+
+#ifdef SPL_BOOT_DEVICE_UART
+	boot_device = BOOT_DEVICE_UART; /* spl_boot_device(); */
+#else
 	boot_device = spl_boot_device();
+#endif /* SPL_BOOT_DEVICE_UART */
+
 	debug("boot device - %d\n", boot_device);
 	switch (boot_device) {
 #ifdef CONFIG_SPL_RAM_DEVICE
@@ -210,7 +221,7 @@ void board_init_r(gd_t *dummy1, ulong dummy2)
 #endif
 #ifdef CONFIG_SPL_USBETH_SUPPORT
 	case BOOT_DEVICE_USBETH:
-		debug("Booting from USB ETHER\");
+		debug("Booting from USB ETHER\n");
 		spl_net_load_image("usb_ether");
 		break;
 #endif
diff --git a/config.mk b/config.mk
index b824bb346..d63267ea9 100644
--- a/config.mk
+++ b/config.mk
@@ -240,6 +240,9 @@ CPPFLAGS += -DCONFIG_SPL_BUILD
 ifeq ($(CONFIG_TPL_BUILD),y)
 CPPFLAGS += -DCONFIG_TPL_BUILD
 endif
+ifeq ($(CONFIG_SPL_BOOT_DEVICE),uart)
+CPPFLAGS += -DSPL_BOOT_DEVICE_UART
+endif
 endif
 
 # Does this architecture support generic board init?
diff --git a/include/configs/omap3_h1.h b/include/configs/omap3_h1.h
index dfc2783e4..f1d852bfe 100644
--- a/include/configs/omap3_h1.h
+++ b/include/configs/omap3_h1.h
@@ -218,6 +218,7 @@
 /* Boot Argument Buffer Size */
 #define CONFIG_SYS_BARGSIZE		(CONFIG_SYS_CBSIZE)
 
+#define CONFIG_CMD_MEMTEST          1          /* needed for memtest */
 #define CONFIG_SYS_ALT_MEMTEST		1
 #define CONFIG_SYS_MEMTEST_START	(0x82000000)		/* memtest */
 								/* defaults */
@@ -284,7 +285,12 @@
 #define CONFIG_SPL
 #define CONFIG_SPL_FRAMEWORK
 #define CONFIG_SPL_NAND_SIMPLE
-#define CONFIG_SPL_TEXT_BASE		0x40200800
+
+/* SPL TEXT BASE needs to be 0x40200000 for booting from bootrom. 
+ * If you're using the debugger other values are possible.
+ */
+
+#define CONFIG_SPL_TEXT_BASE		0x40200000
 #define CONFIG_SPL_MAX_SIZE		(54 * 1024)	/* 8 KB for stack */
 #define CONFIG_SPL_STACK		LOW_LEVEL_SRAM_STACK
 
@@ -305,6 +311,7 @@
 #define CONFIG_SPL_POWER_SUPPORT
 #define CONFIG_SPL_OMAP3_ID_NAND
 #define CONFIG_SPL_LDSCRIPT		"$(CPUDIR)/omap-common/u-boot-spl.lds"
+#define CONFIG_SPL_YMODEM_SUPPORT
 
 /* NAND boot config */
 #define CONFIG_SYS_NAND_5_ADDR_CYCLE
@@ -317,7 +324,7 @@
 						10, 11, 12, 13}
 #define CONFIG_SYS_NAND_ECCSIZE		512
 #define CONFIG_SYS_NAND_ECCBYTES	3
-#define CONFIG_NAND_OMAP_ECCSCHEME	OMAP_ECC_HAM1_CODE_SW
+#define CONFIG_NAND_OMAP_ECCSCHEME	OMAP_ECC_HAM1_CODE_HW
 #define CONFIG_SYS_NAND_U_BOOT_START	CONFIG_SYS_TEXT_BASE
 #define CONFIG_SYS_NAND_U_BOOT_OFFS	0x80000
 
diff --git a/spl/Makefile b/spl/Makefile
index 5e5472d97..f94931102 100644
--- a/spl/Makefile
+++ b/spl/Makefile
@@ -22,6 +22,12 @@ export CONFIG_TPL_BUILD
 SPL_BIN := u-boot-tpl
 else
 SPL_BIN := u-boot-spl
+# SPL_BIN_UART := u-boot-spl-uart TODO - build NAND and UART at once.
+endif
+
+ifdef BOOT_DEVICE_UART
+CONFIG_SPL_BOOT_DEVICE=uart
+export CONFIG_SPL_BOOT_DEVICE
 endif
 
 include $(TOPDIR)/config.mk
-- 
cgit v1.2.3-70-g09d2